Unmute BWC tests FullClusterRestartIT (#118038)

Author: samxbr

muted-tests.yml

@@ -2,12 +2,6 @@ tests:
 - class: "org.elasticsearch.client.RestClientSingleHostIntegTests"
   issue: "https://github.com/elastic/elasticsearch/issues/102717"
   method: "testRequestResetAndAbort"
-- class: org.elasticsearch.xpack.restart.FullClusterRestartIT
-  method: testSingleDoc {cluster=UPGRADED}
-  issue: https://github.com/elastic/elasticsearch/issues/111434
-- class: org.elasticsearch.xpack.restart.FullClusterRestartIT
-  method: testDataStreams {cluster=UPGRADED}
-  issue: https://github.com/elastic/elasticsearch/issues/111448
 - class: org.elasticsearch.smoketest.WatcherYamlRestIT
   method: test {p0=watcher/usage/10_basic/Test watcher usage stats output}
   issue: https://github.com/elastic/elasticsearch/issues/112189